<html>
<head>
	<meta charset="UTF-8">
	<meta content="IE=edge" http-equiv="X-UA-Compatible">
	<meta content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no, width=device-width" name="viewport">
	<title>2893：征服王</title>
	<!-- css -->
	<link href="../css/base.min.css" rel="stylesheet">
	<link href="../css/project.min.css" rel="stylesheet">
	
	<!-- favicon -->
	<!-- ... -->
</head>
<body class="page-brand">
	<header class="header header-transparent header-waterfall ui-header">
		<ul class="nav nav-list pull-left">
			<li>
				<a data-toggle="menu" href="#menu">
					<span class="icon icon-lg">menu</span>
				</a>
			</li>
		</ul>
		<a class="header-logo header-affix-hide margin-left-no margin-right-no" data-offset-top="213" data-spy="affix">征服王</a>
		<span class="header-logo header-affix margin-left-no margin-right-no" data-offset-top="213" data-spy="affix">征服王</span>
	</header>
	<nav aria-hidden="true" class="menu" id="menu" tabindex="-1">
		<div class="menu-scroll">
			<div class="menu-content">
				<a class="menu-logo" href="../index.html">BZOJ离线题库</a>
				<ul class="nav">
					<li>
						<a class="waves-attach" data-toggle="collapse" href="#problems">题目</a>
						<ul class="menu-collapse collapse in" id="problems">
							<li>
								<a class="waves-attach" href="../index.html">主页</a>
							</li>
							<li>
								<a class="waves-attach" href="../list.html">题目列表</a>
							</li>
						</ul>
					</li>
					<li>
						<a class="collapsed waves-attach" data-toggle="collapse" href="#about">关于</a>
						<ul class="menu-collapse collapse" id="about">
							<li>
								<a class="waves-attach" href="../about.html">关于此项目</a>
							</li>
						</ul>
					</li>
					
				</ul>
			</div>
		</div>
	</nav>
	<main class="content">
		<div class="content-header ui-content-header">
			<div class="container">
				<h1 class="content-heading">
                征服王                </h1>
                <p>时间限制：10s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：256MB</p>			</div>
		</div>
		<div class="container">
			<section class="content-inner margin-top-no">
				<div class="row">
					<div class="col-lg-13 col-md-13">
						<div class="card margin-bottom-no">
							<div class="card-main">
								<div class="card-inner">
									
                                <h3>题目描述</h3><p><div><span style="font-size: medium">虽然春希将信息传递给了雪菜，但是雪菜却好像完全不认得春希了。心急如焚的春希打开了第二世代机能，对雪菜的脑内芯片进行了直连-hack。</span></div>
<div><span style="font-size: medium">进入到雪菜内部的春希发现（这什么玩意。。），雪菜的脑部结构被分成了n个块落，并且一些块落之间被有向边连接着。由于四分五裂的脑部，雪菜关于春希的记忆也完全消失，春希为了恋人，启动了inversionprocess.</span></div>
<div><span style="font-size: medium">在inversion process中，要想使雪菜回到正常状态，需要纳米机器人的帮助。纳米机器人可以从任意一个可以作为起点的块落出发进行修复，也可以在任意一个可以作为终点的块落结束修复（并不是到了某个终点就一定要停止）。春希希望所有的节点都能被修复(只要纳米机器人到过该点就算修复过)，这样才能让雪菜重获新生。</span></div>
<div style="text-indent: 12pt"><span style="font-size: medium">作为纳米机器人1号的你能帮助春希算算至少需要多少个机器人才能拯救雪菜吗？</span></div>
<div style="text-indent: 12pt"><span style="font-size: medium">当然，如果无论如何都无法使得春希的愿望被满足的话，请输出&rdquo;no solution&rdquo;（不包括引号）</span></div></p><hr/><h3>输入格式</h3><p><div style="text-indent: 18pt"><span style="font-size: medium">题目包含多组数据</span></div>
<div><span style="font-size: medium">第1行有一个正整数t，表示数据的组数。</span></div>
<div><span style="font-size: medium">第2行有两个正整数n、m，a，b，分别表示块落的数量、有向边的数量、起点的数量、终点的数量。</span></div>
<div><span style="font-size: medium">第3行有a个正整数，表示可以作为起点的块落。</span></div>
<div><span style="font-size: medium">第4行有b个正整数，表示可以作为终点的块落。</span></div>
<div><span style="font-size: medium">第5行至第m+4行，每行有两个正整数u、v，表示能从编号为u的块落到编号为v的块落。</span></div>
<div><span style="font-size: medium">之后以此类推。</span></div></p><hr/><h3>输出格式</h3><p><div style="text-indent: 12pt"><span style="font-size: medium">输出共有t行，每行输出对应数据的答案。</span></div></p><hr/><h3>样例输入</h3><pre>
2
2 1 1 1
1
2
2 1
3 2 3 3
1 2 3
1 2 3
1 2
1 3
</pre><hr/><h3>样例输出</h3><pre>
no solution
2
【数据规模和约定】
对于30%的数据，满足n <= 10, m <= 100。
对于60%的数据，满足n <= 200, m <= 5000。
对于100%的数据，满足t<=10,n <= 1000, m <= 10000。</pre><hr/><h3>提示</h3><p>没有写明提示</p><hr/><h3>题目来源</h3><p>没有写明来源</p>
								</div>
							</div>
						</div>
					</div>
				</div>
				
				
			</section>
		</div>
	</main>

	<div class="fbtn-container">
		<div class="fbtn-inner">
			<a class="fbtn fbtn-lg fbtn-brand-accent waves-attach waves-circle waves-light waves-effect" data-toggle="dropdown" aria-expanded="true"><span class="fbtn-text fbtn-text-left">Menu</span><span class="fbtn-ori icon">apps</span><span class="fbtn-sub icon">close</span></a>
			<div class="fbtn-dropup">
				<a class="fbtn fbtn-brand waves-attach waves-circle waves-light waves-effect" href="../list.html" target="_self"><span class="fbtn-text fbtn-text-left">题目列表</span><span class="icon">menu</span></a>
				<a class="fbtn fbtn-green waves-attach waves-circle waves-effect" href="../index.html" target="_self"><span class="fbtn-text fbtn-text-left">返回主页</span><span class="icon">home</span></a>
				<a class="fbtn waves-attach waves-circle waves-effect" href="http://www.lydsy.com/JudgeOnline/submitpage.php?id=2893" target="_blank"><span class="fbtn-text fbtn-text-left">提交代码</span><span class="icon">send</span></a>
				<a class="fbtn fbtn-orange waves-attach waves-circle waves-effect" href="http://www.lydsy.com/JudgeOnline/wttl/wttl.php?pid=2893" target="_blank"><span class="fbtn-text fbtn-text-left">试题讨论</span><span class="icon">chat</span></a>
				
			</div>
		</div>
	</div>

	<!-- js -->
	<script src="../js/jquery.min.js"></script>
	<script src="../js/base.min.js"></script>
	<script src="../js/project.min.js"></script>
</body>
</html>